A man by the name of Kevin Trudeau has marketed a memory course called "Mega-Memory." In the beginning of the course he quizzes the participants about their "teachability quotient." He says it consists of two parts. First, on a scale of one to ten "where would you put your motivation to learn?" Most people would put themselves pretty high, say about nine to ten, he says.

Secondly, though, Kevin asks the listeners of the tape to put themselves on a scale of one to ten in terms of his or her willingness to change! Ah hah! Now that's another matter altogether. Many of us want to diet, but we refuse to change our eating habits or begin to exercise. Many of us want to get better grades in school, but we simply are not willing to change the amount of television we watch and the amount of going …